Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 15,858,336 km of Earth in 2025
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2018 XC is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2018 XC as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2018 XC orbits the sun every 256 days (0.70 years), coming as close as 0.47 AU and reaching as far as 1.11 AU from the sun. Based on its brightness and the way it reflects light, 2018 XC is probably between 0.019 to 0.043 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2018 XC's orbit is 0.01 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.

2018 XC has 8 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Dec. 1, 2025 15,858,336 16.895
Dec. 14, 2037 29,847,918 12.262
Dec. 4, 2044 16,162,844 12.691
Dec. 1, 2051 2,110,221 14.276
Dec. 1, 2058 11,254,240 16.090
Dec. 2, 2065 25,501,029 18.678
Dec. 1, 2098 4,802,313 15.055
Dec. 2, 2105 17,518,103 17.200

Images and Observations

2018 XC's orbit is determined by observations dating back to Dec. 3, 2018. It was last officially observed on Dec. 10, 2018. The IAU Minor Planet Center records 48 observations used to determine its orbit.

Accessibility and Exploration

This asteroid is not considered a viable target for human exploration by the NHATS study.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2018 XC:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 0.79 AU
  • Eccentricity: 0.4035
  • Inclination: 21.33°
  • Longitude of Ascending Node: 69.81°
  • Argument of Periapsis: 212.22°
  • Mean Anomaly: 45.93°

Physical Characteristics

  • Diameter: ~0.025 km
  • Magnitude: 25.7

Derived Characteristics

  • Orbit Period: 256 days (0.70 years)
  • Avg. Orbit Speed: 33.57 km/s
  • Aphelion Distance: 1.11 AU
  • Perihelion Distance: 0.47 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2018 XC is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.